I've had my 930 for just under two years and just love the gun. Unfortunately this weekend I started having a problem that I figured others might find interesting.
This is a bone stock 930, 28" barrel, shooting 1 1/8 or 1 1/4 oz 7.5 bird shot. The gun probably has around 1000 shells through it prior to this weekend with no problems.
Failures started as follows: pull the trigger, round goes off, hull is extracted, no new shell released from tube, elevator rotates all of the way up and hangs on rear of shell stop, bolt gets released and the whole thing is jamed. Freeing it requires manually pulling the bolt back, reaching into the action and pushing the shell stop and allowing the elevator to drop. This was happening about 25% of the times I pulled the trigger until...
Failures shifted to as follows: pull the trigger, round goes off, hull is extracted, action finishes its motion except instead of the new shell being in the chamber its lying on the ground by my feet!
Manually racking the action brings the third shell into the chamber, so its now effectively a bolt action shotgun with a two round mag
I called Mossberg this morning and Jose and I had a great chat. He's emailing me a shipping label so I can send it in at no cost. I'm sure its something simple...but the fact that its able to spit a shell out the bottom while its cycling its just...well, completely new to either of us.